/* 版心居中 */
.wrapper {
     width: 1200px;
     margin:0 auto;
    }
/* 头部区域 */
.header {
    height: 100px;
    background-color: #fff;
  }
  
  .header .wrapper {
    padding-top: 29px;
    display: flex;
  }
  /* logo */
  .header .logo a {
    display: block;
    width: 195px;
    height: 41px;
    background-image: url(../imgaes/logo.png);
    font-size: 0;
  }
  /* nav导航 */
  .header  .nav {
    margin-left: 100px;
  }
  
  .header  .nav ul {
    display: flex;
  }
  
  .header .nav li {
    margin-right: 20px;
  }
  
  .header   .nav li a {
    font-size: 19px;
    padding: 8px;
    line-height: 34px;
  
  }
  
  .header  .nav li a:hover {
    border-bottom: 2px solid #00a4ff;
  }
  /* 搜索 */
.header .search {
    width: 412px;
    height: 40px;
    background-color: #f3f5f7;
    border-radius: 20px;
    margin-left: 80px;
  }
 .header .search input {
    width: 398px;
    height: 40px;
    background-image: url(../imgaes/search.png );
    background-position:right center ;
    background-repeat: no-repeat;
    /* 背景色透明 */
    background-color: transparent;
    /* 自带边框为0不显示 */
    border: 0;
    padding-left: 20px;
    padding-right: 30px;
    /* 去掉点击之后显示的黑色边框 */
    outline: 0;
  }
  /* 用户模块 */
.header .user {
    margin-left: 32px;
  }
  
  .header .user img {
    /* 让文字和图片垂直居中对齐 */
    vertical-align: middle;
  }
  
 .header .user span {
    color: #666666;
  }
/* header盒子制作结束啦 */

/* banner开始 */
.banner {
    height: 420px;
    background-color: #0092cb;
  }
  
  .banner .wrapper {
    height: 420px;
    background-image: url(../imgaes/banner.png);
  }
  
  .banner .wrapper {
    display: flex;
    /* 主轴两侧对齐 */
    justify-content: space-between;
    /* 侧轴居中 */
    align-items: center;
  }
  
  .banner .left {
    width: 191px;
    height: 420px;
    /*背景半透明*/
    background-color: rgba(0, 0, 0, 0.42);
  }
  
  .banner .right {
    width: 218px;
    height: 305px;
    background-color: pink;
  }
  /* 左侧导航 */
.banner .left {
    padding: 3px 20px;
    width: 191px;
    height: 420px;
    background-color: rgba(0,0,0,0.42);
  }
  
.banner .left a {
    display: block;
    height: 46px;
    background: url(../imgaes/right.png) no-repeat right center;
    line-height: 46px;
    font-size: 16px;
    color: #fff;
  }
  
.banner .left a:hover {
    background-image: url(../imgaes/right-hover.png);
    color: #00a4ff;
  }
  /* right课程表 */
.banner .right {
    margin-top: 60px;
    width: 218px;
    height: 305px;
    background-color: #209dd5;
    border-radius: 10px;
  }
  
  .banner .right h3 {
    margin-left: 14px;
    height: 48px;
    line-height: 48px;
    font-size: 15px;
    color: #fff;
    font-weight: 400;
  }
  
  .banner .right .content {
    padding: 14px;
    height: 257px;
    background-color: #fff;
    border-radius: 10px;
  }
  /* 课程表内容 */
  .banner .right dl {
    margin-bottom: 12px;
    border-bottom: 1px solid #e0e0e0;
  }
  
  .banner .right dt {
    margin-bottom: 8px;
    font-size: 14px;
    line-height: 20px;
    font-weight: 700;
  }
  
  .banner .right dd {
    margin-bottom: 8px;
    font-size: 12px;
    line-height: 16px;
  }
  
  .banner .right dd span {
    color: #00a4ff;
  }
  
  .banner .right dd strong {
    color: #7d7d7d;
    font-weight: 400;
  }
  .banner .right a {
    display: block;
    height: 32px;
    background-color: #00a4ff;
    text-align: center;
    line-height: 32px;
    font-size: 14px;
    color: #fff;
    border-radius: 15px;
  }


  /* 精品推荐 */
.recommend {
    display: flex;
    margin-top: 11px;
    padding: 0 20px;
    height: 60px;
    background-color: #fff;
    box-shadow: 0px 1px 2px 0px rgba(211, 211, 211, 0.5);
    line-height: 60px;
  }
  .recommend h3 {
    font-size: 18px;
    color: #00a4ff;
    font-weight: 400;
  }
  
  .recommend ul {
    /* 除去标题和修改兴趣的尺寸，父级剩余尺寸都给ul，实现把修改兴趣挤到最右侧 */
    flex: 1;
    display: flex;
  }
  
  .recommend ul li a {
    padding: 0 24px;
    border-right: 1px solid #e0e0e0;
    font-size: 18px;
  }
  
  .recommend ul li:last-child a {
    border-right: 0;
  }
  
  .recommend .modify {
    font-size: 16px;
    color: #00a4ff;
  }
  /* 推荐课程 */
.course {
    margin-top: 15px;
  }
  
  .course .hd {
    display: flex;
    justify-content: space-between;
    height: 60px;
    line-height: 60px;
  }
  
  .course .hd h3 {
    font-size: 21px;
    font-weight: 400;
  }
  
  .course  .hd .more {
    padding-right: 20px;
    background: url(../imgaes/more.png) no-repeat right center;
    font-size: 14px;
    color: #999;
  }
  /* 精品课程的排列 */
  .course .bd ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  
  .course .bd li {
    margin-bottom: 14px;
    width: 228px;
    height: 271px;
    background-color: pink;
  }
  .bd li .pic {
    height: 156px;
  }
  
  .bd li .text {
    padding: 20px;
    height: 115px;
    background-color: #fff;
  }
  
  .bd li .text h4 {
    margin-bottom: 13px;
    height: 40px;
    font-size: 14px;
    line-height: 20px;
    font-weight: 400;
  }
  
  .bd li .text p {
    font-size: 14px;
    line-height: 20px;
    color: #999;
  }
  
  .bd li .text p span {
    color: #fa6400;
  }
  
  .bd li .text p i {
    font-style: normal;
  }
  /* 精品课程的图片及图片下面的样式 */
  .bd li .pic {
    height: 156px;
  }
  
  .bd li .text {
    padding: 20px;
    height: 115px;
    background-color: #fff;
  }
  
  .bd li .text h4 {
    margin-bottom: 13px;
    height: 40px;
    font-size: 14px;
    line-height: 20px;
    font-weight: 400;
  }
  
  .bd li .text p {
    font-size: 14px;
    line-height: 20px;
    color: #999;
  }
  
  .bd li .text p span {
    color: #fa6400;
  }
  
  .bd li .text p i {
    font-style: normal;
  }
  /*前端开发工程师区域 */
  .wrapper .hd{
    height: 50px;
    line-height:50px;
    display: flex;
    /* 图片与图片之间有间隙 */
    justify-content: space-between;
    margin: 30px 0 15px;
  }
  .wrapper .hd h3{
    font-size: 21px;
    font-weight: 400;
  }
  .wrapper .hd ul{
    display: flex;
    margin-top: 3px;
  }
  .wrapper .hd .hot{
    color: #00a4ff;
  }
  .wrapper .hd li a{
    font-size: 16px;
    margin: 0 30px;
  }
  .wrapper .bd{
    display: flex;
    justify-content: space-between;
  }
  .wrapper .bd .left {
    width: 228px;
    height: 386px;
}
.wrapper .bd .right {
    width: 957px;
    height: 386px;
}
.wrapper .bd .right .top {
    height: 100px;
    margin-bottom: 15px;
}
.wrapper .bd ul {
    display: flex;
    /* 这个可以使下面左右拉取的位置为写的页面，未设置之前向右拉取将拉到空白 */
    flex-wrap: wrap;
    justify-content: space-between;
}
.wrapper .bd li {
    width: 228px;
    height: 271px;
    background-color: #fff;
    margin-bottom: 14px;
    transition: .3s;
}
.wrapper .bd a h4 {
    height: 55px;
    margin: 20px 20px 0;
    font-size: 14px;
    font-weight: 400;
}
.wrapper .bd a p {
    margin-left: 20px;
}
.wrapper .bd a p span {
    color: #fa6400;
}
/* 底部版权 */
.footer {
    margin-top: 60px;
    padding-top: 60px;
    height: 273px;
    background-color: #fff;
  }
  
  .footer .wrapper {
    display: flex;
    justify-content: space-between;
  }
  
  .footer .left {
    width: 440px;

  }
  .footer .left p {
    margin-top: 24px;
    margin-bottom: 14px;
    font-size: 12px;
    line-height: 17px;
    color: #666;
  }
  
  .footer .left .download {
    display: block;
    width: 120px;
    height: 36px;
    border: 1px solid #00a4ff;
    text-align: center;
    line-height: 34px;
    font-size: 16px;
    color: #00a4ff;
  }
  
  .footer .right {
    display: flex;
  }
  
  .footer .right dl {
    margin-left: 130px;
  }
  
  .footer .right dt {
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 23px;
  }
  
  .footer .right a {
    font-size: 14px;
    color: #666;
    line-height: 24px;
  }